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Vaginal Leptothrix: An Innocent Bystander?
Journal article   Open access   Peer reviewed

Vaginal Leptothrix: An Innocent Bystander?

Pedro Vieira-Baptista, Joana Lima-Silva, Mario Preti, Carlos Sousa, Fernanda Caiano, Colleen K. Stockdale and Jacob Bornstein
Microorganisms (Basel), Vol.10(8), p.1645
08/15/2022
DOI: 10.3390/microorganisms10081645
PMCID: PMC9415594
PMID: 36014063
url
https://doi.org/10.3390/microorganisms10081645View
Published (Version of record) Open Access

Abstract

Leptothrix are long bacteria of rare occurrence; although these bacteria have been implicated in causing vaginal symptoms identical to candidiasis, studies on prevalence and effect on overall vaginal health are lacking. In this study, we evaluated data of women referred to a private clinic for treating vulvovaginal symptoms (n = 1847) and reassessed data of our previous and ongoing studies (n = 1773). The overall rate of leptothrix was 2.8% (102/3620), and the mean age of affected women was 38.8 ± 10.65 years (range 18−76). The majority of the women with leptothrix had normal vaginal flora (63.7% [65/102]). Leptothrix was associated with a higher risk of candidiasis (relative risk (RR) 1.90, 95% confidence interval (CI) 1.1600–3.1013; p = 0.010) and a lower risk of bacterial vaginosis (RR 0.55, 95% CI, 0.3221–0.9398; p = 0.029) and cytolytic vaginosis (RR 0.11, 95% CI, 0.0294–0.4643; p = 0.002). No cases of trichomoniasis were observed. Human immunodeficiency virus infection increased the risk of leptothrix (RR 3.0, 95% CI, 1.6335–5.7245; p = 0.000). Among the women evaluated for vulvovaginal symptoms, 2.4% (45/1847) had leptothrix, and in 26.7% (12/45), leptothrix was considered the causative entity. This study suggests that leptothrix occurrence is rare; it remains unresolved if it can be a cause of vulvar symptoms.
candidiasis dysbiosis lactobacillosis leptothrix vaginal flora wet mount microscopy

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